#!/usr/bin/env python

from mpi4py import MPI
#cimport numpy as np
#from mpi4py cimport mpi_c
comm = MPI.COMM_WORLD

def say_hello():
    print "Hello! I'm rank %d from %d running in total..." % (comm.rank, comm.size)
    comm.Barrier()   # wait for everybody to synchronize _here_